Portion of an insole



FIG. 1 is a perspective view of a portion of an insole showing our new design;

FIG. 2 is a perspective view of an enlarged portion labeled, “FIG. 2,” in FIG. 1;

FIG. 3 is an enlarged cross-section view taken along line 3-3 of FIG. 1;

FIG. 4 is a perspective view of an enlarged portion labeled, “FIG. 4,” in FIG. 1;

FIG. 5 is an enlarged cross-section view taken along line 5-5 of FIG. 1;

FIG. 6 is an enlarged cross-section view taken along line 6-6 of FIG. 1;

FIG. 7 is a bottom view thereof;

FIG. 8 is a side view thereof;

FIG. 9 is an opposite side view thereof;

FIG. 10 is a front view thereof; and,

FIG. 11 is a rear view thereof.

The dash-dot lines in the drawings represent the boundary lines of the claimed design.

The dash-dash lines in the drawings illustrate portions of an insole that form no part of the claimed design. 

CLAIM The ornamental design for a portion of an insole, as shown and described. 